Solar Magnetic Phenomena: Proceedings of the 3rd Summerschool and Workshop held at the Solar Observatory Kanzelhohe, Karnten, Austria, August 25 - September ... (Astrophysics and Space Science Library) PDF
Preview Solar Magnetic Phenomena: Proceedings of the 3rd Summerschool and Workshop held at the Solar Observatory Kanzelhohe, Karnten, Austria, August 25 - September ... (Astrophysics and Space Science Library)
SOLAR MAGNETIC PHENOMENA ASTROPHYSICS AND SPACE SCIENCE LIBRARY VOLUME 320 EDITORIAL BOARD Chairman W.B. BURTON, National Radio Astronomy Observatory, Charlottesville, Virginia, U.S.A. ( SOLAR MAGNETIC PHENOMENA Proceedings of the 3rd Summerschool and Workshop held at the Solar Observatory Kanzelhöhe , Kärnten, Austria, August 25 - September 5, 2003 Edited by ARNOLD HANSLMEIER Institute for Geophysics, Astrophysics and Meteorology, University of Graz, Austria ASTRID VERONIG Institute for Geophysics, Astrophysics and Meteorology, University of Graz, Austria and MAURO MESSEROTTI INAF-Trieste Astronomical Observatory, Italy A C.I.P. Catalogue record for this book is available from the Library of Congress. ISBN 1-4020-2961-6 (HB) ISBN 1-4020-2962-4 (e-book) Published by Springer, P.O. Box 17, 3300 AA Dordrecht, The Netherlands. Sold and distributed in North, Central and South America by Springer, 101 Philip Drive, Norwell, MA 02061, U.S.A. In all other countries, sold and distributed by Springer, P.O. Box 322, 3300 AH Dordrecht, The Netherlands. Printed on acid-free paper springeronline.com All Rights Reserved © 2005 Springer No part of this work may be reproduced, stored in a retrieval s ystem, or transmitted in any form or by any means, electronic, mechanical, photocopying, microfilming, recording or otherwise, without written permission from the Publisher, with the exception of any material supplied specifically for the purpose of bein g entered and executed on a computer s ystem, for exclusive use by the purchaser of the work . Printed in the Netherlands. Table of Co n t e n t s Preface ix Invited Lectures Observations of Photosphere and Chromosphere C. Denker 1 Solar Flares – Observations and Theory B. Vrˇsnak 27 Coronal Mass Ejections and Magnetic Helicity L. van Driel-Gesztelyi 57 High Energy Radiation from the Sun J.C. Brown 87 Physics of Solar Prominences P. Heinzel and U. Anzer 115 Eight Years of SOHO: Some Highlights B. Fleck 139 Contributed Papers 1 2 -D Compressible Reconnection Model 2 M. Skender and B. Vrˇnak 167 Waiting Time Distribution of CMEs C.-T. Yeh, M.D. Ding and P.F. Chen 171 Simultaneous Visible and IR Spectropolarimetry of the Quiet Sun I. Dom´ınguez Cerden˜a, J. Sa´nchez Almeida and F. Kneer 175 A Simple Topological Model of the Bastille Day Flare (July 14, 2000) I.V. Oreshina and B.V. Somov 179 Spectropolarimetry in a Sunspot Penumbra at High Spatial Resolution N. Bello Gonza´lez, O. Okunev and F. Kneer 183 X-Ray and Hα Emission of the 20 Aug 2002 Flare J. Kaˇsparova´, M. Karlick´y, R.A. Schwartz and B.R. Dennis 187 v vi Center-to-Limb Variation of Facular Contrast Derived from MLSO RISE/PSPT Full Disk Images F.L. Vogler, P.N. Brandt, W. Otruba and A. Hanslmeier 191 The Acceleration-Velocity Relationship in 5000 LASCO-CME’s D. Ruˇzdjak, B. Vrˇsnak and D. Sudar 195 Time Evolution of the Spectral Index in Solar Flares P.C. Grigis, D. Buser and A.O. Benz 199 Analysis of Doppler Shifts of Spectral Lines Obtained by the CDS/SOHO Instrument P. G¨mo¨ry, J. Ryba´k, A. Kuˇera, W. Curdt and H. W¨ohl 203 On the Behaviour of a Blinker in Chromospheric and Transition Region Layers F. Tomasz, J. Ryba´k, A. Kuˇera, W. Curdt and H. W¨ohl 207 On the 24- and 155-Day Periodicity Observed in Solar Hα Flares M. Temmer, A. Veronig and A. Hanslmeier 211 He-D3 Polarization Observed in Prominences R. Ramelli and M. Bianda 215 Line-of-Sight Velocity and Magnetic Field in Sunspot Penumbrae D.V. Makarchik and N.I. Kobanov 219 Impulsive X-Ray Radiation Characteristics of Solar Flare Footpoints T. Mrozek and M. Tomczak 223 Velocity Fields in an Irregular Sunspot J. Jurˇca´k, M. Sobotka and V. Mart´nez-Pillet 227 On the Dynamic Disconnection of Rising Ω-Loops L. To´th and O. Gerlei 231 Searching for the Origins of the Fast Solar Wind M.D. Popescu and J.G. Doyle 235 Detectability of High Frequency Acoustic Waves with TRACE A. Fossum and M. Carlsson 239 vii Linking Coronal to Interplanetary Magnetic Helicity M.L. Luoni, S. D a s, sCo. H . M a n ,d r i n i L. van Driel-Gesztelyi and P. D´moulin 243 Debrecen Photoheliographic Data and its Comparison with Other Sunspot Databases G. Mezo˝, T. Baranyi and L. Gy˝ri 247 Properties of a Small Active Region in the Solar Photosphere S. Stangl and J. Hirzberger 251 Small Scale Events Seen in SXT Observations S. Gburek and J. Sylwester 255 Properties of Type IV Radio Bursts with Periodical Fine Structures J. Magdaleni´, B. Vrˇsnak, P. Zlobec, M. Messerotti and M. Temmer 259 Testing the Neupert Effect A.M. Veronig, J.C. Brown, B.R. Dennis, R.A. Schwartz, L. Sui and A.K. Tolbert 263 The Faint Young Sun Problem A. Hanslmeier 267 CCD Spectroscopy of Solar Rotation ˇ S. Jejˇiˇc and A. Cadeˇ 271 The Observing Programs at Kanzelho¨he Solar Observatory W. Otruba 275 Theoretical Modeling of Potential Magnetic Field Distribution in the Corona ˇ V.M. Cadeˇz, A. Debosscher, M. Messerotti, P. Zlobec, M. Iurcev and A. Santin 279 Author Index 283 Preface The concept of summerschools and workshops at the Kanzelho¨he Solar Observatory, Ka¨rnten, Austria, devoted to up-to-date topics in solar physics has been proven to be extremely successful, and thus in August/September 2003 the third combined summerschool and workshop was held there. This book contains the proceedings of the Summerschool and Work- shop “Solar Magnetic Phenomena” held from 25 August to 5 September 2003 at the Solar Observatory Kanzelho¨he, which belongs to the Institute for Geophysics, Astrophysics and Meteorology of the University of Graz, Austria. The book contains the contributions from six invited lecturers. They give an overview on the following topics: observations of the photo- sphere and chromosphere, solar flare observations and theory, coronal mass ejections and the relevance of magnetic helicity, high-energy radiation from the Sun, the physics of solar prominences and highlights from the SOHO mission. The lectures contain about 25 to 30 pages each and provide a valuable introduction to the topics mentioned above. The comprehensive lists of references at the end of each contribution enable the interested reader to go into more detail. The second part of the book contains contributed papers. These pa- pers were presented and discussed in the workshop sessions during the afternoons. The sessions stimulated intensive discussions between the par- ticipants and lecturers. On behalf of the organizing committee and all the participants, we wish to thank the following organizations and companies for their financial support: the Austrian Bundesministerium fu¨r Wissenschaft und Forschung, European Space Agency (ESA), Italian Space Agency (ASI), University of Graz, INAF-Trieste Astronomical Observatory, Marktgemeinde Treffen, Land Steiermark, Raiffeisenbank Ka¨rnten. Graz and Trieste, July 2004 Arnold Hanslmeier, Astrid Veronig and Mauro Messerotti ix OBSERVATIONS OF PHOTOSPHERE AND CHROMOSPHERE CARSTEN DENKER New Jersey Institute of Technology Center for Solar-Terrestrial Research 323 Martin Luther King Blvd Newark, New Jersey, USA Abstract. Solar physics has seen a decade of exciting science and discoveries, which were driven by new instruments for ground- and space-based observations. Multi-wavelength observations involving many observatories now routinely cover the whole solar atmo- sphere from photosphere, to chromosphere, transition region, corona, and heliosphere and have become an integral part in any type of space weather forecasting. The solar photosphere and chromosphere has historically been the domain of gr o u n d - b a s e -d o b s e r vatories and this review will be based on observations and research projects that have been carried out at the Big Bear Solar Observatory (BBSO) to illustrate current trends and prospects for ground-based experimental solar physics. 1. Introduction The Sun is the only star where we can observe surface structures in fine de- tail. Elementary magnetic flux tubes are generated by a self-excited dynamo mechanism and are embedded in convective plasma flows. A recent review of numerical simulations of solar magneto-convection has been given by Schu¨ssler (2001) who points out that at the moment, we lack observations with adequate spatial, temporal, and spectral resolution to validate or reject theoretical models of magneto-convection. Solar observations have to cope with the earth’s turbulent atmosphere, which is heated by solar radiation causing severe degradation of image quality – so-called “seeing”. The ad- vance of a next generation of solar telescopes in combination with adaptive optics (AO), post-facto image reconstruction techniques, and sophisticated post-focus instrumentation, namely two-dimensional spectro-polarimetry, have brought us closer to the goal of resolving the fundamental length and time scales of solar magneto-convection. The present review focusses on recent observations of the solar photo- sphere and chromosphere to illustrate the characteristic spatial di s t bruition of highly intermittent magnetic fields in various environments, to study 1 A. Hanslmeier et al. (eds.), Solar Magnetic Phenomena, 1–25. © 2005 Springer. Printed in the Netherlands.
The list of books you might like
